Valid Disguises:

Security Uniform, Servant Uniforms Expensive suits.
It's possible that Bondage Gear could work at C+ Workers' Rights, since the CEO tends to force his Slaves to wear it.

[U]seable Tiles:

Safe: The Safe may contain any or all of CEO Photographs, CEO Love Letters, CEO Tax Papers, a few thousand dollars' worth of $100 bills, some Fine Jewelry, and the .50AE Desert Eagle with ammunitionCEO study: You get one chance to visit the CEO in his study, provided that you don't Alarm the Conservatives. Doing so prior to encountering the CEO will give him enough time to take cover in his panic room.